ABCs of z/OS System Programming Volume 3 - IBM Redbooks

3.17 Increase capacity of volumes
Figure 3-17 Screen showing current maximum size available
Screen showing maximum available cylinders
Figure 3-17 is displayed after you select Increase Capacity. A warning message is issued
regarding a possible volume type change to 3390 custom. You can then select Close
Message. Notice that the panel displays the maximum number of cylinders that can be
specified.
After you close the message, the panel in Figure 3-18 on page 81 is displayed where you can
specify the number of cylinders to increase the volume size. When you specify a new capacity
to be applied to the selected volume, specify a value that is between the minimum and
maximum size values that are displayed. Maximum values cannot exceed the amount of total
storage that is available.
Note: Only volumes of type 3390 model 3, 3390 model 9, and 3390 custom, can be
expanded. The total volume cannot exceed the available capacity of the storage image.
Capacity cannot be increased for volumes that are associated with Copy Services
functions.
80 ABCs of z/OS System Programming Volume 3